<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        canvas{
            /* border: 1px solid red; */
        }

        body {
            overflow: hidden;
        }
    </style>
</head>
<body>
    <canvas id='canvas'></canvas>
    <script src="index.js"></script>
</body>
</html>
